Chemistry: analytical and immunological testing – Synthetic or natural resin
Reexamination Certificate
2009-10-02
2011-12-13
Teskin, Fred M (Department: 1762)
Chemistry: analytical and immunological testing
Synthetic or natural resin
C436S161000, C210S656000, C528S482000
Reexamination Certificate
active
08076147
ABSTRACT:
A method and apparatus for chromatography of a polyolefin polymer by flowing a solution of the polyolefin polymer through liquid flowing through a graphitic carbon liquid chromatography stationary phase. The method can be used to determine the monomer to comonomer ratio of a polyolefin copolymer such as a copolymer of ethylene and 1-octene or a copolymer of propylene and ethylene.
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patent: 7214320 (2007-05-01), Gregori et al.
patent: 2002/0056686 (2002-05-01), Kyrlidis et al.
Takeuchi et al,“Ion Chromatography of Inorganic Anions on Graphitic Carbon as the Stationary Phase”, J. High Resol. Chromatography, 2000, 23, (10) 590-594.
Damme Freddy Van
Degroot Alexander W.
Lyons John W.
Miller Matthew D.
Winniford William L.
Dow Global Technologies LLC
Teskin Fred M
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